I have a Benq 120hz screen with a d-sub cable, I've tested the screen on another computer. The cable and monitor run perfectly at 120hz. However when I plug into my main computer, my HD radeon Directcu II 3 gig won't run it at 120hz. I've tried both inputs for my d-sub cable to no avail. The odd thing is when I plug it into my desktop, it displays the screen as running on dvi, not d-sub.
I've spent quite awhile for searching for answers, but no one has quite had my problem from what I've read.
I would really appreciate a different avenue of thought.
My motherboard is a p8z68-v GEN3, if that has anything to do with it.